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The Testament of Sister New Devil(新妹魔王の契約者 (スタメント Shinmai Maō no Tesutamento)is a Japanese light novel series written by Tetsuto Uesu and illustrated by Nekosuke Ōkuma. Since 2012, there are twelve volumes have been published by Kadokawa Shoten under their Kadokawa Sneaker Bunko imprint.

Volume List

Main Series

Number Cover Japanese Volume Title Translation Japan release date ISBN
1.Shinmai Vol1 0000新妹魔王の契約者I Shinmai Maou no Keiyakusha 1 2012-10-01 ISBN 978-4-04-100495-1
2.Shinmai v02 000新妹魔王の契約者II Shinmai Maou no Keiyakusha 2 2013-02-01 ISBN 978-4-04-100670-2
3.Volume III新妹魔王の契約者III Shinmai Maou no Keiyakusha 3 2013-06-01 ISBN 978-4-04-100860-7
4.Volume IV新妹魔王の契約者IV Shinmai Maou no Keiyakusha 4 2013-11-01 ISBN 978-4-04-101061-7
5.Shinmai Maou no Keiyakusha v05 000新妹魔王の契約者V Shinmai Maou no Keiyakusha 5 2014-03-29 ISBN 978-4-04-101297-0
6.Volume 6 cover新妹魔王の契約者VI Shinmai Maou no Keiyakusha 6 2014-03-29 ISBN 978-4-04-101433-2
7.Volume 7 cover新妹魔王の契約者VII Shinmai Maou no Keiyakusha 7 2015-01-01 ISBN 978-4-04-102268-9
8.Cover新妹魔王の契約者VIII Shinmai Maou no Keiyakusha 8 2015-07-01 ISBN 978-4-04-102576-5
9.Light Novel Volume IX新妹魔王の契約者IX Shinmai Maou no Keiyakusha 9 2015-12-01 ISBN 978-4-04-103747-8
10.Shinmai Maou Vol X新妹魔王の契約者X Shinmai Maou no Keiyakusha 10 2017-02-01 ISBN 978-4-04-103748-5
11.
Shinmai v11 000
新妹魔王の契約者XI Shinmai Maou No Keiyakusha 11 2017-11-01 ISBN 978-4041051733
12.
Volume XII cover
新妹魔王の契約者XII Shinmai Maou No Keiyakusha 12 2018-04-01 ISBN 978-4041068151

Gaiden

Number Cover Japanese Volume Title Translation Japan release date ISBN
1.Cover Light converted新妹魔王の契約者 LIGHT! Shinmai Maou no Keiyakusha Light! 2015-09-03 ISBN 978-4-04-103691-4
2.Cover Sweet新妹魔王の契約者 SWEET! Shinmai Maou no Keiyakusha Sweet! 2016-08-01 ISBN 978-4-04-104654-8

Video

スニーカー文庫新シリーズ「新妹魔王の契約者」あらすじ紹介PV

スニーカー文庫新シリーズ「新妹魔王の契約者」あらすじ紹介PV

Novel's Promotional Video